Type-writing machine.



No;787,020. PATENTED-APR.11,1905.

YE.' E..BARNEY."-V TYPE WRITING MACHINE; APPLIUATION FILED NOV.24,1902.-

oTTORNEY UNITED STATES PATENT OFFICE.

Patented April 11, 1905.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 787,020, dated April11, 1905.

Application filed November 24', 1902. Serial No. 132,591.

To oil/Z whom it may concern:

Be it known that I, EDWIN E. .BARNEY, of Groton, in the county ofTompkins, in the State of New York have invented new and usefulImprovements in Type-Writing Machines, of which the following, taken inconnection with the accompanying drawings, is a full, clear, and exactdescription.

This invention relates to improvements in type-writing machines, havingmore particular reference to the type-bar action, which is similar inmany respects to that set forth in my pending application, Serial No.100,051, filed March 26, 1902.

The invention involves a type-bar, a keylever, and a second lever havingflexing connections with the type-bar and key-lever. One of its objectsis to permit the flexing joint between the type bar and second lever toshift automatically toward the fulcrum of the second lever when thetype-bar is moved to the printing-point, so thatthe second leveroperates with an increased power to return the type-bar to its normalposition. 1

Another object is to prevent the sliding movement of said flexing jointwhen the typebar is at rest, this locking of the flexing joint beingaccomplished by means separate from the second lever and serves toprevent rebound of the type-bar from its normal position.

A further object is to prevent the vibration of the type-bar at theprinting position to avoid .double or blurred print; and a still furtherobject is to provide means for automatically flexing this latter flexingconnection when the pressure upon the key-lever is released, whereby thetype-bar is more quickly returned from the printing-point to its normalposition.

In the drawings, Figures 1 and 2 are simi lar elevations of portions ofa type-writing.

machine embodying my invention, the mechanisms being shown in theirnormal position in Fig. 1 and in their operative position in Fig. 2.Fig. 3 is a top plan, partly broken away, of a universal bar for theflexing connection between the key and intermediary lever, a series ofintermediaryvlevers being shown in connection with the universal bar.

Similar reference characters indicate cor- 5 responding parts in all theviews.

The type-bar 1 is pivotally mounted upon a suitable hanger, as a fin 2,in a plane beneath the platen 3, the type-bar being normally disposed in,a substantially horizontal position and its type being adapted toengagethe front face of the platen 3, the front end of the type- 'barnormally resting upon a seat 4;.

The key-lever 5 is mounted horizontally beneath the type-bar with itsrear end fulcrumed at 6 and its forward end normally held against anabutment 7 by a spring 8.

Interposed between the type-bar 1 and keylever 5 is a second lever 9,which is centrally fulcrumed at 10 to a suitable support 11, 5 tliissecond lever being normally disposed in,

a substantially horizontal position, its rear arm 12 being connected bya link 13 to the heel of the type-bar, and its front arm 14 is connectedby a link15 to the intermediate por- 7 tion of the key-lever 5, the link13 and its connection with the arm 12 forming a flexing connectionbetween the lever 9 and type-bar 1, and the arm 11 and link 15 form aflexing connection between said second lever and the key-lever.

The flexing joint between the lever 9 and type-bar is arranged to shifttoward the fulcrum 10 when the key-lever isdepressed, and

I therefore provide the arm 12 with an elonand permits an easier returnmovement of the 9 type-bar with less power than would be the case if theflexing joint always maintained the same position with reference to thefulcrum. As the type-bar returns to its normal position its own gravitytends to extend the flexing connection, and thereby draws the shoulder17 to the rear end of the slot 16; but I preferably employ a cam 18 toengage the shoulder 17 and insure its return to the extreme end of theslot 16. This cam also serves to normally hold the shoulder 17 againstthe rear wall of the slot, and therefore locks the link 18 from endwisemovement to prevent rebound of the type-bar at its normal position ofrest, it being understood that one of these cams is employed for eachflexing connection between the lever 9 and heel of the type-bar and thatthe shoulder 17 protrudes through the slot a suflicient distance toengage its cam.

In order to prevent the double action of the type at the printing-point,I preferably adjust the flexing connection between the lever 9 andkey-lever, so that when the key-lever is depressed to the limit of itsmovement the point of connection with the arm let is moved to a positionin a direct line between the fulcrum of the lever 9 and the point ofconnection of the link 15 with the key-lever, in which position thetype-bar is held a slight distance away from the printing-point.

The lever 9 being normally in a substantially horizontal position nearlyparallel with the normal positions of the type-bar and keylever, it isevident that when the key-lever is depressed to its limit the lever 9 isrocked to a position at substantially right angles to its normalposition and that the type-bar is moved with an accelerated motion fromnormal to printing positions, the momentum imparted to the type-bar bythe quick depression of the key-lever carrying the type forward to theprinting-point, and therefore moves the point of connection of the link15 with the arm 1 1 beyond the direct line between the fulcrum 10 andpoint of connection of said link 15 with the key-lever.

It is desirable to return the type-bar from the printing-point asrapidly as possible to prevent one type-bar from interfering withanother in the rapid action of the keys, and I therefore provide ayielding abutment 20, which is adapted to be engaged by the rear facesof the arms 14 when the key-lever is depressed, this abutment consistingof a universal bar extending transversely of the levers and is adaptedto be actuated endwise by each lever 9 independently of the others, asuitable spring 21 operating to return the abutment and to acceleratethe return movement of the type-bar from its printing position. Thisreciprocal movementof the universal bar or abutment as it is actuated bythe several keys and the spring 21 may be utilized to operate othermechanisms in the machineas, for instance, the escape mechanismand Ihave therefore shown said 'bar as connecting to oscillating pawls 22,which coaet with an escapementwheel 23 to effect the step-by-stepmovement of the carriage at each movement of the keylevers.

The flexing joint between the lever 9 and heel of the type-bar, orrather the pivotal connection 17, is normally disposed in a direct linebetween the fulcrum 10 and the point of connection of the link 13 withthe type-bar, and said shoulder 17 coacts with the cam 18 to preventrebound or vibration of the type-bar when returned toits normalposition. It is evident, however, that this shoulder 17 may be at oneside of the direct line, as described, and the cam adjusted to hold itnormally in its extreme outer position to effect the same result.

Having thus described my invention, what I claim, and desire to secureby Letters Iatent, is

1. In a type-writing machine, the combination with a type-bar and akey-lever, of a second lever connected to the key-lever and having aflexing connection with the type-bar, the point of connection of thetype-bar with the second lever shifting its position with reference tothe fulcrum of said second lever as the type-bar is moved toward andfrom its printing position to change the leverage, and means to shiftthe connection from the fulcrum as the type-bar returns to its normal position.

2. In a type-writing machine, the combination with a type-bar and akey-lever, of a second lever connected to the key-lever and having aflexing connection with the tyne-bar, the point of connection of thetype-bar with the second lever moving automatically by gravity towardthe fulcrum of the second lever when printing to decrease the leverageon the return of the type-bar.

3. In a type-writing machine, the combination with a type-bar and akey-lever, of a second lever connected to the key-lever and having aflexing connection with the typebar, the point of connection of thetype-bar with the second lever shifting its position with reference tothe fulcrum of said second lever as the type-bar is moved toward andfrom its printing position to change the leverage and a cam to returnsaid point of connection on the return of the type-bar.

4. In atype-writing machine, the combination with a type-bar and akey-lever, of a second lever connected to the key-lever and having aflexing connection with the typebar, the point of connection of thetype-bar with the second lever moving automatically toward the fulcrumof the second lever in the act of printing to decrease the leverage onthe return of the type-bar and means to automatically shift said pointof connection from the fulcrum as the type-bar returns to its normalposition.

5. In a type-writing machine, the combination with a type-bar and akey-lever, of a second lever having flexing connections with thetype-bar and key-lever, the point of conneetion of the type-bar with thesecond lever shifting by gravity toward the fulcrum of the second leveras the type-bar is thrown to the printing-point.

6.- In a type-writing machine, the combination with a type-bar and akey-lever, of a second lever having flexing connections with thetype-bar and key-lever, the point of connection of the type-bar with thesecond lever shifting toward the fulcrum of the second le- Ver as thetype-bar is thrown to the printingpoint, and means for returning saidpoint of connection to its extreme outer position when the type-barreturns to its normal position.

7. In a type-writing machine, the combination with a type-bar and akey-lever, a second lever connected to the key-lever, a link connectedto the type-bar and having sliding and pivotal connection with thesecond lever, and

means operating to lock the sliding connection from movement when thetype-bar is in its normal position.

8. In a type-writing machine, the combination with a type-bar and akey-lever, a second lever connected to the key-lever, a link connectedto the type-bar and having sliding and pivotal connection with thesecond lever, and

means operating to automatically lock the nection to prevent rebound ofthe type-bar from its resting position.

10. A type-bar action for type-writing machines comprising a type-bar, akey-lever, a second lever, a link connected to the type-bar and havingsliding connection with the second lever, means to lock the link fromsliding movement upon the second lever when the type-bar is in normalposition, and a connection between the key-lever and second. lever.

11. A type-bar action for type-writing machines comprising a type-bar, akey-lever, a second lever connected to the key-lever and havinga flexingconnection with the type-bar, and means separate from the second leverto lock the flexing connection to prevent rebound of the type-bar whenreturned to norsecond lever connected to the type-bar, aflexingconnection between the key-lever and second lever, the flexing jointbeing normally in a direct line drawn through the fulcrum of the secondlever substantially parallel to the key-lever and movable to a positionin a direct line between the said fulcrum and the point of connectionwith the key-lever.

13. A type-bar action for type-writing machines comprising a type-bar, akey-lever, a second lever connected to the type-bar and havingaflexingconnection with the key-lever,

the flexing joint moving to a position in a direct line between thefulcrum of the second lever and its point of connection with thekeylever as the key-lever is depressed and before the type reaches theprinting-point.

14. In a type-writing machine, a type-bar action comprising a type-bar,a key-lever and an intermediary lever all extending normally insubstantially the same direction in planes one above the other, a linkconnecting one end of the intermediary lever with the keylever, thepoint of connection with the intermediary lever being movable to aposition in a direct line between the fulcrum of the intermediary leverand the point of connection of the link with the key-lever, and a secondlink connecting the other end of the intermediary connecting the levers,the point of connection of the link with the second lever moving intoand out of a direct line between the fulcrum of the second lever and thepoint of connection of said link with the key-lever as the keylever isoperated.

16. Inatype-writing machine, the combination of a key-lever, a type-bar,a second lever,

a link connecting one arm of the second lever with the key-lever andhaving its point of connection with the second lever movable into andout of a direct line between its point of connection with the key-leverand fulcrum of the second lever as the key-lever is operated, a secondlink connecting the other arm of the second lever with the heel of thetype-bar and having its point of connection with the second levermovable into and out of a direct line be- 7 ary lever all normallyextending in substantially the'same direction, of connections betweenthe intermediary lever, type-bar and key-lever, and a sliding abutmentengaged with and reacting against the intermediary le- IIO ver only whenthe key-lever is depressed for the purpose described.

19. In a type-Writing machine, a type-bar action comprising a type-barand key-lever, a normally substantially horizontal lever of the firstkind connected to the type-bar and keylever at opposite sides of itsaxis and adapted to be moved to a substantially vertical position in theoperation of printing, and a movable member adapted to be actuated byand reacting against the second lever for the purpose specified.

20. In a type-Writing machine, a type-bar action comprising a typerbarlever of the first kind, a key-lever of the second kind, an intermediarylever of the first kind, all of said le- EDIVIN E. BAHIEY.

Witnesses:

CHAS. O. Rnonns, W. B. GALE.

